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    • 99. 发明公开
    • HIGH FREQUENCY CIRCUIT ANALYSER
    • 高频电路分析仪
    • EP1649297A1
    • 2006-04-26
    • EP04743572.2
    • 2004-07-23
    • University College Cardiff Consultants Ltd.
    • BENEDIKT, JohannesTASKER, Paul Juan
    • G01R27/32
    • G01R31/2822G01R27/32
    • An analyser for measuring the response of an electronic device (DUT 206) to an RF input signal from a signal generator (240a) is described. An active load pull circuit (201) is connected to the DUT 206, which receives an output signal from the DUT 206 and then feeds a modified signal back to the DUT 206. The signal is modified by a signal processing circuit (237) in view of input signals x, y to control the magnitude gain and phase change effected by the feedback circuit (237). Thus, positive feedback loops are avoided and better control of the analyser is permitted. A network analyser, or other signal measuring device (242), logs the waveforms (from which s-parameters derived) observed at ports of the DUT 206, thereby allowing the behaviour of the DUT 206 under various load conditions to be analysed.
    • 描述了用于测量电子设备(DUT 206)对来自信号发生器(240a)的RF输入信号的响应的分析器。 有源负载拉电路(201)连接到DUT206,DUT206接收来自DUT206的输出信号,然后将修改的信号反馈回DUT206。信号由信号处理电路(237)修改 的输入信号x,y,以控制由反馈电路(237)影响的幅度增益和相位变化。 因此,避免了正反馈回路,并且允许更好地控制分析仪。 网络分析仪或其他信号测量设备(242)记录在DUT 206的端口处观察到的波形(从中导出的s参数),从而允许分析在各种负载条件下的DUT 206的行为。